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novelai-storage
Basedformer
Commits
df7a70ab
Commit
df7a70ab
authored
Jul 04, 2022
by
novelailab
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return identity
parent
a0b66a4b
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basedformer/dataset.py
basedformer/dataset.py
+6
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basedformer/dataset.py
View file @
df7a70ab
...
...
@@ -82,21 +82,24 @@ class ShardedImageDataset(data.Dataset):
keys
=
[
*
range
(
key
,
key
+
self
.
bsz
)]
tensors
=
self
.
executor
.
map
(
self
.
read_from_metadata_key
,
keys
)
tensors
=
list
(
tensors
)
tensors
=
torch
.
stack
(
tensors
)
#make sure these operations are fast!
ids
=
[
t
[
1
]
for
t
in
tensors
]
tensors
=
torch
.
stack
([
t
[
0
]
for
t
in
tensors
])
#####################################
if
self
.
outer_transform
:
tensors
=
self
.
outer_transform
(
tensors
)
return
tensors
def
read_from_metadata_key
(
self
,
key
):
offset
,
size
,
d_
id
=
self
.
metadata
[
key
]
offset
,
size
,
id
=
self
.
metadata
[
key
]
data
=
self
.
mmap
[
offset
:
offset
+
size
]
data
=
decode_jpeg
(
data
)
data
=
torch
.
from_numpy
(
data
)
.
permute
(
2
,
0
,
1
)
if
self
.
inner_transform
:
data
=
self
.
inner_transform
(
data
)
return
data
return
data
,
id
class
ImageDatasetBuilder
():
def
__init__
(
self
,
folder_path
,
name
,
threads
=
None
):
...
...
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